8
PSR-A300
4.
PNAM Circuit Board (1/3, 2/3, 3/3)
4-1
Remove the lower case assembly. (See procedure 1)
4-2
PNAM Circuit Board 3/3
(Time required: About 2 minutes)
4-2-1 Remove the volume knob from the control panel
surface. (Fig. 1, 3)
4-2-2 Remove the three (3) screws marked [150A]. The
PNAM circuit board 3/3 can then be removed. (Fig. 2)
4-3
PNAM Circuit Board 1/3
(Time required: About 3 minutes)
4-3-1 Remove the PNAM circuit board 3/3.
4-3-2 Remove the twelve (12) screws marked [150B]. The
PNAM circuit board 1/3 can then be removed. (Fig. 2)
4-4
PNAM circuit board (2/3)
(Time required: About 3 minutes)
4-4-1 Remove the nine (9) screws marked [150C]. The
PNAM circuit board 2/3 can then be removed. (Fig. 2)
[30]
[30]
[A]
[A]
DMLCD
PNAM
2/3
PNAM
1/3
1/3
3/3
PNAM
[150C]
[240B]
[150B] [150A]
[150B]
[240B]
[270B]
[150B]
[150C]
[240C]
Lower Case Keyboard Assembly
[240C]
Bottom view
3
1
4
7
5
8
6
2
[30]: Bind Head Tapping Screw-B 4.0X8 MFZN2W3 (WE974600)
[150]: Bind Head Tapping Screw-B 3.0X8 MFZN2W3 (WE774300)
[240]: Bind Head Tapping Screw-B 3.0X12 MFZN2W3 (WE987400)
[270]: Bind Head Tapping Screw-B 3.0X30 MFZN2W3 (WF491000)
(Fig.2)
Knob
(Master Volume)
(Fig.3)
Conductor side
Rubber Connector
Rubber Connector
DMLCD
LCD
Rubber Connector
Back Light Assembly
LCD Holder
(Fig.4)
